Filter services dictionary per host

To greatly reduce the amount of log noise from skipped tasks, set a
var in the role that filters the 'swift_services' dict to one that only
contains services relevant for each host.

Change-Id: Ib4e7d398ce2b34e560520d0266dc67bed653cc5c

tasks/swift_init_common.yml

@@ -22,9 +22,6 @@
   service:
    name: "{{ item.value.program_name }}"
    enabled: "yes"
-  with_dict: "{{ swift_services }}"
-  when:
-    - inventory_hostname in groups[item.value.group]
-    - "{{ item.value.service_en | default(true) }}"
+  with_dict: "{{ filtered_swift_services }}"
   notify:
     - Restart swift services

tasks/swift_init_systemd.yml

@@ -20,8 +20,7 @@
     owner: "{{ swift_system_user_name }}"
     group: "{{ swift_system_group_name }}"
     mode: "02755"
-  with_dict: "{{ swift_services }}"
-  when: inventory_hostname in groups[item.value.group]
+  with_dict: "{{ filtered_swift_services }}"
 
 - name: Create TEMP lock dir
   file:
@@ -30,8 +29,7 @@
     owner: "{{ swift_system_user_name }}"
     group: "{{ swift_system_group_name }}"
     mode: "02755"
-  with_dict: "{{ swift_services }}"
-  when: inventory_hostname in groups[item.value.group]
+  with_dict: "{{ filtered_swift_services }}"
 
 # TODO(mgariepy):
 # Remove this in Pike as it only needed to handle upgrades
@@ -40,8 +38,7 @@
   file:
     path: "/etc/tmpfiles.d/{{ item.value.program_name }}.conf"
     state: absent
-  with_dict: "{{ swift_services }}"
-  when: inventory_hostname in groups[item.value.group]
+  with_dict: "{{ filtered_swift_services }}"
 
 - name: Create tmpfiles.d entry
   template:
@@ -50,8 +47,7 @@
     mode: "0644"
     owner: "root"
     group: "root"
-  with_dict: "{{ swift_services }}"
-  when: inventory_hostname in groups[item.value.group]
+  with_dict: "{{ filtered_swift_services }}"
 
 - name: Place the systemd init script
   config_template:
@@ -62,8 +58,7 @@
     group: "root"
     config_overrides: "{{ item.value.init_config_overrides }}"
     config_type: "ini"
-  with_dict: "{{ swift_services }}"
-  when: inventory_hostname in groups[item.value.group]
+  with_dict: "{{ filtered_swift_services }}"
   notify:
     - Reload systemd daemon
 

vars/main.yml

@@ -0,0 +1,24 @@
+---
+# Copyright 2017, Rackspace US, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+filtered_swift_services: >
+  {%- set services = swift_services.copy() %}
+  {%- for key,value in swift_services.items() %}
+  {%- if value.group not in group_names or
+  (not value.service_en | default(True) | bool) %}
+  {%- set _ = services.pop(key) %}
+  {%- endif %}
+  {%- endfor %}
+  {{- services -}}